CN109056786A - Face upward inclined road shoulder wall water drainage behind the wall system and construction method - Google Patents
Face upward inclined road shoulder wall water drainage behind the wall system and construction method Download PDFInfo
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- CN109056786A CN109056786A CN201810927732.3A CN201810927732A CN109056786A CN 109056786 A CN109056786 A CN 109056786A CN 201810927732 A CN201810927732 A CN 201810927732A CN 109056786 A CN109056786 A CN 109056786A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
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Abstract
The invention discloses one kind to face upward inclined road shoulder wall water drainage behind the wall system comprising rubble or cobble loaded filter, dank material, permeable geotextiles, tapping pipe and gravel-sorted subbase；Rubble or cobble anti-filter are placed on the inside of barricade；Dank material be placed in rubble or cobble loaded filter and it is backfilled roadbed supported between, be in inverted triangle structure；Permeable geotextiles are arranged along wall on the inside of side slope of backfilled roadbed supported, barricade bottom and barricade；Tapping pipe has multiple, is respectively placed in the drain hole in barricade, and one end is connected with rubble or cobble loaded filter, and the other end is placed on the outside of barricade, for the water on the inside of barricade to be discharged；Gravel-sorted subbase is placed under road surface structare layer, dank material and it is backfilled roadbed supported on.The present invention also provides the construction methods for facing upward inclined road shoulder wall water drainage behind the wall system.The water after subgrade wall can be discharged by the present invention, it is ensured that the stability of roadbed and road shoulder barricade.
Description
Technical field
The present invention relates to barricades to drain field, and in particular to one kind faces upward inclined road shoulder wall water drainage behind the wall system and construction party
Method.
Background technique
In subgrade engineering, roadbed filling section generally requires setting road shoulder wall as subgrade structure object, to guarantee that roadbed is steady
Fixed and road surface is complete, while reducing earth and rock works and occupied area, prevents current scour, is usually used in regulation landslide, landslide etc.
Subgrade defect.China is in the high-speed developing period at present, can all build a large amount of side slope branch mark structure every year, and barricade is exactly most often
The one kind seen is all very big to subgrade stability and safety effects if barricade goes wrong.
The unstable failure of subgrade is usually related with underground water, and current any drainage measure not yet can be solved thoroughly
Certainly barricade drainage problem.General road shoulder wall water drainage behind the wall relies solely on the tapping pipe row that barricade wall is arranged at a certain distance
Water, this kind of mode usually have the following problems: 1) lacking filter structure after barricade wall, tapping pipe is easy in the long-term use
It is blocked by soil, causes water drainage behind the wall unsmooth, with the infiltration of rainwater, the rising suddenly of level of ground water, potential slide mass is full
It can increase suddenly with area, the barricade coefficient of stability is caused to decline, eventually lead to barricade deformation and increase generation sliding rupture.2) barricade
Rubble filter layer is set after wall, but is to indiscriminately imitate specification or rule of thumb simply laid, does not consider real construction quality
The problem of, cause filter layer after wall not play a role, rock-soil layer impeded drainage causes ponding, causes load after wall to increase, significantly
Reduce the stability of barrier wall structure.
Summary of the invention
Water after subgrade wall can be discharged the purpose of the present invention is to provide a kind of, it is ensured that the stability of road shoulder barricade
Face upward inclined road shoulder wall water drainage behind the wall system and water discharge method.
The technical scheme adopted by the invention is that:
One kind facing upward inclined road shoulder wall water drainage behind the wall system comprising
Rubble or cobble loaded filter are placed on the inside of barricade；
Dank material, be placed in rubble or cobble loaded filter and it is backfilled roadbed supported between, be in inverted triangle structure；
Permeable geotextiles are arranged along wall on the inside of side slope of backfilled roadbed supported, barricade bottom and barricade；
Tapping pipe, has multiple, is respectively placed in the drain hole in barricade, one end is connected with rubble or cobble loaded filter
Logical, the other end is placed on the outside of barricade, for the water on the inside of barricade to be discharged；
Gravel-sorted subbase is placed under road surface structare layer, dank material and it is backfilled roadbed supported on.
The present invention also provides another kinds to face upward inclined road shoulder wall water drainage behind the wall system comprising
Rubble or cobble loaded filter, have multiple, are placed on the inside of barricade, and be located at drain hole；
Dank material, be placed in barricade and it is backfilled roadbed supported between, be in inverted triangle structure；Rubble or cobble loaded filter and thoroughly
Water-based material is in contact；
Permeable geotextiles are arranged along wall on the inside of side slope of backfilled roadbed supported, barricade bottom and barricade；
Tapping pipe, has multiple, is respectively placed in the drain hole in barricade, one end is connected with rubble or cobble loaded filter
Logical, the other end is placed on the outside of barricade, for the water on the inside of barricade to be discharged；
Gravel-sorted subbase is placed under road surface structare layer, dank material and it is backfilled roadbed supported on.
According to the above scheme, the dank material is right angled triangle, and a vertical edges are close to gravel-sorted subbase, separately
One vertical edges is on the inside of barricade, i.e., dank material is gradually increased from the bottom up.
According to the above scheme, the dank material is mainly made of medium coarse sand.
According to the above scheme, gutter is equipped on the outside of barricade, the water through tapping pipe outflow flows into gutter.
According to the above scheme, the tapping pipe is in quincunx laying.
According to the above scheme, the every expansion joint 20m indwelling 2cm wide of barricade is seamed into straight line, is filled out in expansion joint using plastic foamboard
Fill it is closely knit, stretch seam surface use the ointment cementation of fissures；The gradient of barricade exterior wall is 1:0.5, and the gradient of barricade interior wall is 1:0.3, gear
Wall uses concrete material or slabstone concrete material.
According to the above scheme, dank material is wrapped up by composite geo-membrane.
After underground water or ponding are by permeable geotextiles inside roadbed, into the water penetration material of composite geo-membrane package
The fine grained soil contained in drainage is collected and crossed to material, dank material, crosses water after filter through dank material and passes through on the inside of barricade
Rubble or cobble loaded filter further filter impurities in water, then again through permeable geotextiles filtering after enter barricade in lay
Drain hole, and then water is discharged to outside roadbed, is discharged into culvert through gutter.
The present invention provides a kind of construction method for facing upward inclined road shoulder wall water drainage behind the wall system comprising following steps:
Step 1: preparation of construction
Construction survey setting-out should be carried out before Retaining wall；
Step 2: detection bearing capacity
After removing stratum surface soil, excavates barricade foundation pit and detect hole bottom bearing capacity, if hole bottom bearing capacity is unsatisfactory for requiring,
It carries out hole bottom and changes filling out graded broken stone and reaching design requirement bearing capacity；
Step 3: pouring barricade
It can carry out wall after the completion of construction retaining wall foundation to pour, retaining wall should be segmented and pour, and every 20m indwelling 2cm wide stretches
Contracting seam, is seamed into straight line, uses plastic foamboard to fill in expansion joint closely knit, the seam surface that stretches uses the ointment cementation of fissures；Barricade exterior wall
Face is constructed by the inclined-plane of 1:0.5, and inner wall surface pours concrete from formwork by the gradient of 1:0.3, barricade using concrete material or
Slabstone concrete material；
In barricade building process, drain hole is arranged after building to certain altitude in barricade, and first row drain hole should be higher than that ditch
Bottom 0.3m is arranged, and the waterproof compacting soil layer of one layer of 20cm thickness should be laid with below first row drain hole water inlet；It is higher by barricade
Above ground portion should be layered setting drain hole, and sluicing 2.5 × 2.5m of pitch of holes arranges interlaced arrangement, pre-buried φ 10cmPVC in hole up and down
Pipe；
Step 4: backfilled roadbed supported soil
After barricade pours, after intensity reaches 75%, the qualified soil of back-filling in layers and compaction in layers, are formed back on the inside of barricade
Roadbed is filled out, compactness is greater than 96%；The gradient of roadbed side slope is 1:0.2；
Step 5: being laid with permeable geotextiles
One layer of permeable geotextiles are laid with along wall on the inside of side slope of backfilled roadbed supported, barricade bottom and barricade, permeable geotextiles are solid
It is scheduled on side slope of backfilled roadbed supported and barricade；
Step 6: backfill rubble or cobble loaded filter
On the inside of barricade, the rubble or cobble loaded filter that a slice width degree is 30cm are backfilled along wall height；
Step 7: backfill dank material
Rubble or cobble loaded filter and it is backfilled roadbed supported between backfill dank material, and it is closely knit；
Step 8: building road surface waterproof layer
The gravel-sorted subbase of 15cm thickness is built on dank material；
Step 9: completing the laying of road surface structare layer.
The present invention also provides the construction methods that another kind faces upward inclined road shoulder wall water drainage behind the wall system comprising following steps:
Step 1: preparation of construction
Construction survey setting-out should be carried out before Retaining wall；
Step 2: detection bearing capacity
After removing stratum surface soil, excavates barricade foundation pit and detect hole bottom bearing capacity, if hole bottom bearing capacity is unsatisfactory for requiring,
It carries out hole bottom and changes filling out graded broken stone and reaching design requirement bearing capacity；
Step 3: pouring barricade
It can carry out wall after the completion of construction retaining wall foundation to pour, retaining wall should be segmented and pour, and every 20m indwelling 2cm wide stretches
Contracting seam, is seamed into straight line, uses plastic foamboard to fill in expansion joint closely knit, the seam surface that stretches uses the ointment cementation of fissures；Barricade exterior wall
Face is constructed by the inclined-plane of 1:0.5, and inner wall surface pours concrete from formwork by the gradient of 1:0.3, barricade using concrete material or
Slabstone concrete material；
In barricade building process, drain hole is arranged after building to certain altitude in barricade, and first row drain hole should be higher than that ditch
Bottom 0.3m is arranged, and the waterproof compacting soil layer of one layer of 20cm thickness should be laid with below first row drain hole water inlet；It is higher by barricade
Above ground portion should be layered setting drain hole, and sluicing 2.5 × 2.5m of pitch of holes arranges interlaced arrangement, pre-buried φ 10cmPVC in hole up and down
Pipe；
Step 4: backfilled roadbed supported soil
After barricade pours, after intensity reaches 75%, the qualified soil of back-filling in layers and compaction in layers, are formed back on the inside of barricade
Roadbed is filled out, compactness is greater than 96%；The gradient of roadbed side slope is 1:0.3；
Step 5: being laid with permeable geotextiles
One layer of permeable geotextiles are laid with along wall on the inside of side slope of backfilled roadbed supported, barricade bottom and barricade, permeable geotextiles are solid
It is scheduled on side slope of backfilled roadbed supported and barricade；
Step 6: backfill dank material
Barricade and it is backfilled roadbed supported between backfill dank material, and it is closely knit；
When backfilling dank material, the rubble or cobble loaded filter of setting 30cm × 30cm, is each let out on the inside of barricade
The corresponding rubble in water hole or cobble loaded filter；
Step 7: building road surface waterproof layer
The gravel-sorted subbase of 15cm thickness is built on dank material；
Step 8: completing the laying of road surface structare layer.
The beneficial effects of the present invention are:
By setting dank material, permeable geotextiles, rubble or cobble loaded filter etc., the particulate contained in drainage is crossed
Soil prevents obstruction drain hole, overcomes the problem of drain hole is easy blocking, guarantees that underground water and ponding can be arranged rapidly in roadbed
Roadbed out reduces the influence to roadbed and barricade；
Dank material can accommodate the water of certain volume, so can alleviate roadbed water pressure in a certain range, reduce road
The water pressure of base and barricade influences, it is ensured that the stability of roadbed and road shoulder barricade；
Gravel-sorted subbase is set, to prevent water on road surface structare layer from flowing into roadbed, ensure that roadbed and
The stability of road shoulder barricade；
Convenient and quick construction, quality are easy to control.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the structure that inclined road shoulder wall water drainage behind the wall system (being suitable for the higher situation of level of ground water) is faced upward in embodiment 1
Schematic diagram；
Fig. 2 is the structure that inclined road shoulder wall water drainage behind the wall system (being suitable for the lower situation of level of ground water) is faced upward in embodiment 2
Schematic diagram；
Fig. 3 is drain hole arrangement schematic diagram；
Fig. 4 substrate backfills schematic diagram；
Fig. 5 substrate, which is changed, fills out processing schematic；
Fig. 6 sloping area embedded depth of foundation value table；
Wherein, 1, rubble or cobble loaded filter, 2, dank material, 3, cohesive soil, 4, permeable geotextiles, 5, barricade,
6, tapping pipe, 7, road surface structare layer, 8, gravel-sorted subbase, 9, barricade substrate change and fill out metalling, 10, retaining wall foundation, 11, return
Fill out roadbed.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Embodiment 1, referring to Fig. 1, Fig. 3-Fig. 6, one kind facing upward inclined road shoulder wall water drainage behind the wall system comprising rubble or ovum
Stone loaded filter 1, dank material 2, permeable geotextiles 4, tapping pipe 6, gravel-sorted subbase 8.Rubble or cobble loaded filter 1
Width be 30cm, be placed in the inside of barricade 5, upper part is road surface structare layer 7, and its underpart is cohesive soil 3.Dank material 2 is main
It to be made of medium coarse sand, be wrapped up by composite geo-membrane, is placed between rubble or cobble loaded filter 1 and backfilled roadbed supported 11, in
Triangular structure of right angle, for a vertical edges close to gravel-sorted subbase 8, another vertical edges is close to 5 inside of barricade, i.e., permeable
Property material 2 is gradually increased from the bottom up.Permeable geotextiles 4 are along backfilled roadbed supported 11 side slope, 3 upper surface of cohesive soil at 5 bottom of barricade
And 5 inside wall of barricade setting.Tapping pipe 6 have it is multiple, be in quincunx laying, be respectively placed in the drain hole in barricade 5, one
End is connected with rubble or cobble loaded filter 1, and the other end is placed in 5 outside of barricade, for the water of 5 inside of barricade to be discharged.
Gravel-sorted subbase 8 is placed under road surface structare layer 7, on dank material 2 and backfilled roadbed supported 11.
The present embodiment is equipped with gutter on the outside of barricade 5, and the water flowed out through tapping pipe 6 flows into gutter.Barricade 5
Every expansion joint 20m indwelling 2cm wide, is seamed into straight line, uses plastic foamboard to fill in expansion joint closely knit, the seam surface that stretches is using oil
The cream cementation of fissures；The gradient of 5 exterior wall of barricade is 1:0.5, and the gradient of barricade interior wall is 1:0.3, and barricade uses concrete material or slabstone
Concrete material.
In the present invention, dank material is filled according to θ angular region after barricade wall, underground water or ponding pass through inside roadbed
After permeable geotextiles 4, into the dank material 2 of composite geo-membrane package, contain in the collection of dank material 2 and excessively drainage
Fine grained soil, the rubble or cobble loaded filter 1 passed through on the inside of barricade through the water after filter of dank material 2 is further to cross drainage
Then middle impurity enters the tapping pipe 6 laid in barricade 5 after the filtering of permeable geotextiles 4 again, and then water is discharged to outside roadbed,
Culvert is discharged into through gutter.
The above-mentioned construction method for facing upward inclined road shoulder wall water drainage behind the wall system, anti-close to 5 side rubble of barricade or cobble
Filtering layer be along wall height lay, the specific steps of which are as follows:
Step 1: preparation of construction
Barricade 5 should carry out construction survey setting-out before constructing, and construction lofting calculates the coordinate of every section of barricade according to design drawing
And elevation setting-out, on the spot, flat field, basialveolar line carry out slope by soil property on the spot and rock stratum；
Step 2: detection bearing capacity
After removing stratum surface soil, excavates barricade foundation pit and detect hole bottom bearing capacity and pressed if hole bottom bearing capacity is met the requirements
It is excavated according to Fig. 4, if hole bottom bearing capacity is unsatisfactory for requiring, carries out hole bottom and change and fill out graded broken stone, formed barricade substrate and change and fills out
Metalling 9 reaches design requirement bearing capacity；To hillside retaining wall, base toe length of embedment and flap back gauge should accord with simultaneously
Close Fig. 6 design requirement；
Step 3: pouring barricade
It can carry out wall after the completion of construction retaining wall foundation 10 to pour, retaining wall should be segmented by design requirement and be poured, every 20m
The expansion joint indwelling 2cm wide, is seamed into straight line, uses plastic foamboard to fill in expansion joint closely knit, the seam surface that stretches is filled using ointment
Seam；Barricade wall face is constructed by the inclined-plane of 1:0.5, and inner wall surface pours concrete from formwork by the gradient of 1:0.3, and barricade is using mixed
Solidifying soil material or slabstone concrete material；
In barricade building process, barricade presses design requirement size positions and drain hole is arranged after building to certain altitude, the
One excretion water hole should be higher than that bottom of trench 0.3m is arranged, and the waterproof rammer of one layer of 20cm thickness should be laid with below first row drain hole water inlet
Real soil layer；It should be layered setting drain hole in barricade part above ground level, sluicing 2.5 × 2.5m of pitch of holes arranges interlaced arrangement up and down,
Pre-buried φ 10cmPVC pipe in hole；
Step 4: backfilled roadbed supported soil
After barricade pours 7 days, after intensity reaches 75%, the qualified soil of back-filling in layers and compaction in layers, shape on the inside of barricade
At backfilled roadbed supported 11, compactness is greater than 96%；The gradient of roadbed side slope is 1:0.2；
Step 5: being laid with permeable geotextiles
One layer of permeable geotextiles are laid with along wall on the inside of side slope of backfilled roadbed supported, barricade bottom and barricade, permeable geotextiles are solid
It is scheduled on side slope of backfilled roadbed supported and barricade；
Step 6: backfill rubble or cobble loaded filter
On the inside of barricade, the rubble or cobble loaded filter that a slice width degree is 30cm are backfilled along wall height；
Step 7: backfill dank material
Rubble or cobble loaded filter and it is backfilled roadbed supported between backfill dank material, and it is closely knit；
Step 8: building road surface waterproof layer
The gravel-sorted subbase of 15cm thickness is built on dank material；
Step 9: completing the laying of road surface structare layer.
Embodiment 2 ,-Fig. 6, one kind facing upward inclined road shoulder wall water drainage behind the wall system referring to fig. 2 comprising rubble or cobble are anti-
Filtering layer 1, dank material 2, permeable geotextiles 4, tapping pipe 6, gravel-sorted subbase 8.Rubble or cobble loaded filter 1 have more
It is a, it is placed in 5 inside of barricade, and be located at drain hole.Dank material 2 is mainly made of medium coarse sand, by composite geo-membrane
Package, is placed between barricade 5 and backfilled roadbed supported 11, is in chamfer triangular structure, a vertical edges are close to graded broken stone base
Layer 8, another vertical edges is close to 5 inside of barricade, i.e., dank material 2 is gradually increased from the bottom up.Rubble or cobble anti-filter
Layer 1 is on dank material 2；Permeable geotextiles 4 along backfilled roadbed supported 11 side slope, the cohesive soil 3 at 5 bottom of barricade upper surface and
The setting of 5 inside wall of barricade, and be fixed on 5 inside of barricade and backfilled roadbed supported 11.Tapping pipe 6 has multiple, is respectively placed in barricade 5
In interior drain hole, one end is connected with rubble or cobble loaded filter 1, and the other end is placed in 5 outside of barricade, for that will keep off
The water discharge of 5 inside of wall.Gravel-sorted subbase 8 is placed under road surface structare layer 7, on dank material 2 and backfilled roadbed supported 11.?
Dank material 2 is equipped between gravel-sorted subbase 8 and barricade 5, i.e. dank material 2 is placed in the inside structure sheaf 7 and gradation
Under granular sub-base 8.Gutter is equipped on the outside of barricade 5, the water through tapping pipe outflow flows into gutter.
The every expansion joint 20m indwelling 2cm wide of barricade 5, is seamed into straight line, uses plastic foamboard to fill in expansion joint closely knit, stretches
Contracting seam surface uses the ointment cementation of fissures；The gradient of barricade exterior wall is 1:0.5, and the gradient of barricade interior wall is 1:0.3, and barricade uses coagulation
Soil material or slabstone concrete material.
The above-mentioned construction method for facing upward inclined road shoulder wall water drainage behind the wall system, when lower suitable for level of ground water, in the implementation
In example, lays, specifically comprise the following steps: along drain hole close to barricade side rubble or cobble loaded filter
Step 1: preparation of construction
Should carry out construction survey setting-out before Retaining wall, construction lofting according to design drawing calculate every section of barricade coordinate and
In on the spot, flat field, basialveolar line carry out slope by soil property on the spot and rock stratum for elevation setting-out；
Step 2: detection bearing capacity
After removing stratum surface soil, to excavate barricade foundation pit and detect hole bottom bearing capacity, satisfaction is then excavated according to Fig. 4, if
Hole bottom bearing capacity is unsatisfactory for requiring, then carries out hole bottom according to Fig. 5 and change filling out graded broken stone and reaching design requirement bearing capacity；To mountain
Slope retaining wall, base toe length of embedment and flap back gauge should meet Fig. 6 design requirement simultaneously；
Step 3: pouring barricade
It can carry out wall after the completion of construction retaining wall foundation to pour, retaining wall should be segmented and pour, and every 20m indwelling 2cm wide stretches
Contracting seam, is seamed into straight line, uses plastic foamboard to fill in expansion joint closely knit, the seam surface that stretches uses the ointment cementation of fissures；Barricade exterior wall
Face is constructed by the inclined-plane of 1:0.5, and inner wall surface pours concrete from formwork by the gradient of 1:0.3, barricade using concrete material or
Slabstone concrete material；
In barricade building process, barricade presses design requirement size positions and drain hole is arranged after building to certain altitude, the
One excretion water hole should be higher than that bottom of trench 0.3m is arranged, and the waterproof rammer of one layer of 20cm thickness should be laid with below first row drain hole water inlet
Real soil layer；It should be layered setting drain hole in barricade part above ground level, sluicing 2.5 × 2.5m of pitch of holes arranges interlaced arrangement up and down,
Pre-buried φ 10cmPVC pipe in hole；
Step 4: backfilled roadbed supported soil
After barricade pours 7 days, after intensity reaches 75%, the qualified soil of back-filling in layers and compaction in layers, shape on the inside of barricade
At backfilled roadbed supported, compactness is greater than 96%；The gradient of roadbed side slope is 1:0.3；
Step 5: being laid with permeable geotextiles
One layer of permeable geotextiles are laid with along wall on the inside of side slope of backfilled roadbed supported, barricade bottom and barricade, permeable geotextiles are solid
It is scheduled on side slope of backfilled roadbed supported and barricade；
Step 6: backfill dank material
Barricade and it is backfilled roadbed supported between backfill dank material, and it is closely knit；
When backfilling dank material, the rubble or cobble loaded filter of setting 30cm × 30cm, is each let out on the inside of barricade
The corresponding rubble in water hole or cobble loaded filter；
Step 7: building road surface waterproof layer
After above each layer is completed and passes through examination, the gravel-sorted subbase of 15cm thickness is built on dank material；
Step 8: completing the laying of road surface structare layer after gravel-sorted subbase is checked and accepted.
In the present invention, the high H of barricade wall need to be less than 8m.Drain hole is inclined to set.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (9)
1. one kind faces upward inclined road shoulder wall water drainage behind the wall system, it is characterised in that: including
Rubble or cobble loaded filter are placed on the inside of barricade；
Dank material, be placed in rubble or cobble loaded filter and it is backfilled roadbed supported between, be in inverted triangle structure；
Permeable geotextiles are arranged along wall on the inside of side slope of backfilled roadbed supported, barricade bottom and barricade；
Tapping pipe, has multiple, is respectively placed in the drain hole in barricade, and one end is connected with rubble or cobble loaded filter,
Its other end is placed on the outside of barricade, for the water on the inside of barricade to be discharged；
Gravel-sorted subbase is placed under road surface structare layer, dank material and it is backfilled roadbed supported on.
2. one kind faces upward inclined road shoulder wall water drainage behind the wall system, it is characterised in that: including
Rubble or cobble loaded filter, have multiple, are placed on the inside of barricade, and be located at drain hole；
Dank material, be placed in barricade and it is backfilled roadbed supported between, be in inverted triangle structure；Rubble or cobble loaded filter and water penetration
Material is in contact；
Permeable geotextiles are arranged along wall on the inside of side slope of backfilled roadbed supported, barricade bottom and barricade；
Tapping pipe, has multiple, is respectively placed in the drain hole in barricade, and one end is connected with rubble or cobble loaded filter,
Its other end is placed on the outside of barricade, for the water on the inside of barricade to be discharged；
Gravel-sorted subbase is placed under road surface structare layer, dank material and it is backfilled roadbed supported on.
3. according to claim 1 or 2 face upward inclined road shoulder wall water drainage behind the wall system, it is characterised in that: the water penetration material
Material is right angled triangle, and a vertical edges are close to gravel-sorted subbase, another vertical edges is close to barricade inside, i.e. water penetration
Material is gradually increased from the bottom up.
4. according to claim 3 face upward inclined road shoulder wall water drainage behind the wall system, it is characterised in that: the dank material
Mainly it is made of medium coarse sand.
5. according to claim 1 or 2 face upward inclined road shoulder wall water drainage behind the wall system, it is characterised in that: set on the outside of barricade
There is gutter, the water through tapping pipe outflow flows into gutter.
6. according to claim 1 or 2 face upward inclined road shoulder wall water drainage behind the wall system, it is characterised in that: the tapping pipe is in
Quincunx laying.
7. according to claim 1 or 2 face upward inclined road shoulder wall water drainage behind the wall system, it is characterised in that: the every 20m indwelling of barricade
The expansion joint 2cm wide, is seamed into straight line, uses plastic foamboard to fill in expansion joint closely knit, the seam surface that stretches uses the ointment cementation of fissures；Gear
The gradient of wall exterior wall is 1:0.5, and the gradient of barricade interior wall is 1:0.3, and barricade uses concrete material or slabstone concrete material.
8. a kind of construction method for facing upward inclined road shoulder wall water drainage behind the wall system, it is characterised in that include the following steps:
Step 1: preparation of construction
Construction survey setting-out should be carried out before Retaining wall；
Step 2: detection bearing capacity
After removing stratum surface soil, excavates barricade foundation pit and detect hole bottom bearing capacity, be unsatisfactory for requiring if cheating bottom bearing capacity, carry out
Hole bottom, which is changed, to be filled out graded broken stone and reaches design requirement bearing capacity；
Step 3: pouring barricade
Wall can be carried out after the completion of construction retaining wall foundation to pour, retaining wall should be segmented and pour, every expansion joint 20m indwelling 2cm wide,
It is seamed into straight line, uses plastic foamboard to fill in expansion joint closely knit, the seam surface that stretches uses the ointment cementation of fissures；Barricade wall face presses 1:
0.5 inclined-plane is constructed, and inner wall surface pours concrete from formwork by the gradient of 1:0.3, and barricade is mixed using concrete material or slabstone
Solidifying soil material；
In barricade building process, drain hole is arranged after building to certain altitude in barricade, and first row drain hole should be higher than that bottom of trench
0.3m is arranged, and the waterproof compacting soil layer of one layer of 20cm thickness should be laid with below first row drain hole water inlet；It is higher by ground in barricade
Face part should be layered setting drain hole, and sluicing 2.5 × 2.5m of pitch of holes arranges interlaced arrangement, pre-buried φ 10cmPVC in hole up and down
Pipe；
Step 4: backfilled roadbed supported soil
After barricade pours, after intensity reaches 75%, the qualified soil of back-filling in layers and compaction in layers, form backfill road on the inside of barricade
Base, compactness are greater than 96%；The gradient of roadbed side slope is 1:0.2；
Step 5: being laid with permeable geotextiles
One layer of permeable geotextiles are laid with along wall on the inside of side slope of backfilled roadbed supported, barricade bottom and barricade, permeable geotextiles are fixed on
On side slope of backfilled roadbed supported and barricade；
Step 6: backfill rubble or cobble loaded filter
On the inside of barricade, the rubble or cobble loaded filter that a slice width degree is 30cm are backfilled along wall height；
Step 7: backfill dank material
Rubble or cobble loaded filter and it is backfilled roadbed supported between backfill dank material, and it is closely knit；
Step 8: building road surface waterproof layer
The gravel-sorted subbase of 15cm thickness is built on dank material；
Step 9: completing the laying of road surface structare layer.
9. a kind of construction method for facing upward inclined road shoulder wall water drainage behind the wall system, it is characterised in that include the following steps:
Step 1: preparation of construction
Construction survey setting-out should be carried out before Retaining wall；
Step 2: detection bearing capacity
After removing stratum surface soil, excavates barricade foundation pit and detect hole bottom bearing capacity, be unsatisfactory for requiring if cheating bottom bearing capacity, carry out
Hole bottom, which is changed, to be filled out graded broken stone and reaches design requirement bearing capacity；
Step 3: pouring barricade
Wall can be carried out after the completion of construction retaining wall foundation to pour, retaining wall should be segmented and pour, every expansion joint 20m indwelling 2cm wide,
It is seamed into straight line, uses plastic foamboard to fill in expansion joint closely knit, the seam surface that stretches uses the ointment cementation of fissures；Barricade wall face presses 1:
0.5 inclined-plane is constructed, and inner wall surface pours concrete from formwork by the gradient of 1:0.3, and barricade is mixed using concrete material or slabstone
Solidifying soil material；
In barricade building process, drain hole is arranged after building to certain altitude in barricade, and first row drain hole should be higher than that bottom of trench
0.3m is arranged, and the waterproof compacting soil layer of one layer of 20cm thickness should be laid with below first row drain hole water inlet；It is higher by ground in barricade
Face part should be layered setting drain hole, and sluicing 2.5 × 2.5m of pitch of holes arranges interlaced arrangement, pre-buried φ 10cmPVC in hole up and down
Pipe；
Step 4: backfilled roadbed supported soil
After barricade pours, after intensity reaches 75%, the qualified soil of back-filling in layers and compaction in layers, form backfill road on the inside of barricade
Base, compactness are greater than 96%；The gradient of roadbed side slope is 1:0.3；
Step 5: being laid with permeable geotextiles
One layer of permeable geotextiles are laid with along wall on the inside of side slope of backfilled roadbed supported, barricade bottom and barricade, permeable geotextiles are fixed on
On side slope of backfilled roadbed supported and barricade；
Step 6: backfill dank material
Barricade and it is backfilled roadbed supported between backfill dank material, and it is closely knit；
When backfilling dank material, the rubble or cobble loaded filter of setting 30cm × 30cm, each drain hole on the inside of barricade
A corresponding rubble or cobble loaded filter；
Step 7: building road surface waterproof layer
The gravel-sorted subbase of 15cm thickness is built on dank material；
Step 8: completing the laying of road surface structare layer.
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| CN109972654A (en) * | 2019-05-08 | 2019-07-05 | 贵州智华建设工程有限责任公司 | A J-type anchor high retaining wall and its construction method |
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| CN109826227A (en) * | 2019-01-03 | 2019-05-31 | 中交隧道工程局有限公司 | A kind of preparation method and its retaining wall of the bilateral slope mortar flag stone retaining wall of high mountain |
| CN109972654A (en) * | 2019-05-08 | 2019-07-05 | 贵州智华建设工程有限责任公司 | A J-type anchor high retaining wall and its construction method |
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| CN111719910B (en) * | 2020-05-20 | 2021-08-10 | 中国建筑第八工程局有限公司 | Retaining wall partition type beam field structure and construction method thereof |
| CN112095384A (en) * | 2020-09-14 | 2020-12-18 | 中交二公局第四工程有限公司 | Construction method for preventing and treating freezing-thawing instability of roadbed slope in plateau frozen soil area |
| CN113106799A (en) * | 2021-04-15 | 2021-07-13 | 核工业南方工程总公司 | Roadbed structure of road and bridge engineering and construction method thereof |
| CN113529785A (en) * | 2021-07-22 | 2021-10-22 | 水利部交通运输部国家能源局南京水利科学研究院 | Soil retaining structure suitable for eliminating frost heaving effect in cold region and construction method |
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